| Objective: To observe the training effect of shoulder PNF technology on Improving College Students' scapular dyskinesia,and to determine whether PNF technology can be used as a simple and effective way to improve the scapular dyskinesia,thereby improving shoulder joint function,and providing practical feasibility for the rehabilitation of scapular dyskinesia Training program.Methods: Thirty-six college students with Kibler ? type male scapula dysphoria and18 normal subjects were selected.The 36 subjects were randomly divided into experimental group(18 subjects)and case control group(18 subjects)by random number method.Participants in the control group and the normal group did not intervene during the experiment and could receive health education;the experimental group was given PNF exercise intervention for 60 minutes each time,3 times a week for 6 weeks.The subjects were assessed by Kerlan-Jobe Orthopaedic Clinic(KJOC),Simple Shoulder Test(SST)Questionnaire and Visual Analogue Scale(VAS)before and after intervention.SBA,LSST distance and muscle strength were measured,and the PNF of scapular muscles were compared the changes of activation degree and balance ratio of shoulder muscles during D2 flexion and extension and D1 flexion and extension.In the end,the data were obtained by paired-sample T test within the group and one-way analysis of variance between groups.Results: 1.KJOC score changes: After 6 weeks of PNF intervention,the KJOC score of the orthopedic clinical shoulder and elbow questionnaire in the PNF intervention experimental group was significantly higher than that of the PNF non-intervention control group(P<0.05),and was compared with the KJOC score of the normal group in the orthopedic clinical shoulder and elbow questionnaire.The difference was not significant(P>0.05),while the KJOC score of the orthopedic clinical shoulder and elbow questionnaire of the PNF non-intervention control group was still significantly lower than that of the normal group(P<0.05);after 6 weeks of PNF intervention,the experimental group's KJOC score of the orthopedic clinical shoulder and elbow questionnaire It was significantly higher than the KJOC score 6 weeks ago(P<0.05),and the KJOC scores of the other two groups were not significantly changed in the orthopedic clinical shoulder and elbow questionnaire around 6 weeks(P>0.05).2.SST score changes: After 6 weeks of PNF intervention,the SST score of the brief shoulder joint function test questionnaire of the PNF intervention experimental group was significantly higher than that of the PNF non-intervention control group(P<0.05),and the SST scores of the PNF intervention experimental group and the normal group there was no significant difference(P>0.05).The SST score of the simple shoulder joint function test questionnaire of the PNF non-intervention control group was still significantly lower than that of the normal group(P<0.05);after 6 weeks of PNF intervention,the simple shoulder joint function test of the experimental group the SST score of the questionnaire was significantly higher than the score before the intervention(P<0.05),and the SST scores of the concise shoulder function test questionnaire before and after the experiment did not change significantly in the other two groups(P>0.05).3.VAS score changes: After PNF intervention for 6 weeks,the visual analog pain VAS score of the PNF intervention experimental group was significantly lower than that of the PNF non-intervention control group(P<0.05),but still slightly higher than the normal group(P<0.05).The visual analog pain VAS score of the intervention control group was still significantly higher than that of the normal group(P<0.05);after 6 weeks of PNF intervention,the visual analog pain VAS score of the PNF intervention experimental group was significantly lower than that before the intervention(P<0.05).The visual analog pain VAS scores before and after the experiment did not change significantly(P>0.05);4.SBA angle changes: After 6 weeks of PNF intervention,the SBA angle of the scapular balance in the PNF intervention experimental group was significantly smaller than the PNF non-intervention control group(P<0.05),and still slightly larger than the normal group(P<0.05),the PNF non-intervention control group the scapular balance angle SAB angle was still significantly larger than the normal group(P<0.05);after 6 weeks of PNF intervention,the scapular balance angle SBA angle of the PNF intervention experimental group was significantly smaller than before the intervention(P<0.05),and the scapular balance of the other two groups before and after the experiment the angle of SBA did not change significantly(P>0.05).5.LSST changes: After 6 weeks of PNF intervention,the LSST of the scapula in the PNF intervention experimental group was significantly smaller than the PNF non-intervention control group at 0°,45° and 90° positions respectively(P<0.05),and compared with the normal group.There was no significant difference in shifting LSST(P>0.05).The scapular shifting LSST of the PNF non-intervention control group was still significantly greater than the normal group at 0°,45° and 90° positions(P<0.05);after 6 weeks of PNF intervention,The LSST of the scapular movement in the PNF intervention experimental group was significantly reduced at 0°,45°,and 90°compared with the position before the intervention(P<0.05).The PNF non-intervention control group and the normal group were at 0° before and after the LSST experiment.There were no significant differences between,45° and 90°positions(P>0.05).6.Changes in shoulder isokinetic strength indicators:(1)Comparison of shoulder muscle peak torque: After 6 weeks of PNF intervention,the UT peak torque of the PNF intervention experimental group was significantly lower than before the intervention(P<0.05),while MT,LT and SA the peak torque of muscles was significantly higher than that before the intervention(P<0.05);the peak torques of UT,MT,LT and SA muscles in the PNF non-intervention control group and the normal group were not significantly different before and after the experiment(P>0.05).(2)Comparison of relative peak torque of shoulder muscles: After 6 weeks of PNF intervention,the relative peak torque of UT in the PNF intervention experimental group was significantly lower than before the intervention(P<0.05),while the relative peak torque of MT,LT and SA muscles was higher than before the intervention.The differences were not significant(P>0.05);the relative peak torques of the UT,MT,LT and SA muscles of the PNF non-intervention control group and the normal group were not significantly different before and after the experiment(P>0.05).7.Changes in surface EMG indicators:(1)Comparison of MVC% of muscle recruitment in D2 flexion: After 6 weeks of PNF intervention,PNF intervention experimental group D2 flexion of UT,MT,LT and SA muscle recruitment MVC%and intervention,the difference between the previous comparisons was significant(P<0.05),among which the MVC% recruitment degree of UT was significantly reduced(P<0.05),while the recruitment degree MVC% of MT,LT and SA was significantly higher than that before the intervention(P<0.05);PNF non-intervention control group,there was no significant difference between the intervention control group and the normal group in the degree of recruitment of target muscles MVC% in the D2 formula before and after the experiment(P>0.05).(2)Comparison of MVC% of muscle recruitment in D1 flexion: After 6 weeks of PNF intervention,the MVC% of muscle recruitment of UT,MT,LT and SA in D1 flexion of the experimental group was significantly different from that before intervention(P<0.05).UT recruitment degree MVC% was significantly reduced(P<0.05),MT,LT and SA recruitment degree MVC% were significantly higher than before intervention(P<0.05);PNF non-intervention control group and normal group D1 bending time the target muscle recruitment level MVC% was not significantly different before and after the experiment(P>0.05).(3)Comparison of MVC% of UT,MT,LT and SA muscle recruitment degree during D1 extension:(1)Comparison between groups,there was no significant difference in muscle recruitment degree of the three groups before and after intervention(P>0.05);(2)Comparison within groups,The muscle recruitment degree of the three groups was not significantly different before and after the experiment(P>0.05);(4)Comparison of MVC% of UT,MT,LT and SA muscle recruitment during D2stretch: After 6 weeks of PNF intervention,only the PNF intervention experimental group SA recruitment MVC% was significantly higher than before the intervention(P<0.05),the rest the degree of muscle recruitment in the group did not change significantly before and after the experiment(P>0.05).(5)Comparison of scapular girdle muscle activity ratio in D2 flexion mode: After 6weeks of PNF intervention,the scapular girdle muscle activity ratio UT/MT,UT/LT and UT/SA in D2 flexion mode of the PNF intervention experimental group were significantly lower than before intervention(P<0.05);while the ratio of scapular girdle muscle activity in the other groups did not change significantly before and after the experiment(P>0.05).(6)Comparison of scapular girdle muscle activity ratio in D1 flexion mode: After 6weeks of PNF intervention,the scapular girdle muscle activity ratio UT/MT,UT/LT and UT/SA in D1 flexion mode of the PNF intervention experimental group were significantly lower than before the intervention(P<0.05);while the ratio of scapular girdle muscle activity in the other groups did not change significantly before and after the experiment(P>0.05).(7)Comparison of scapular girdle muscle activity ratio in D1 extension mode: After 6weeks of PNF intervention,the muscle activity ratio UT/SA of the PNF intervention experimental group was significantly lower than that of the PNF non-intervention control group(P<0.05),and the PNF intervention experimental group muscles the activity ratio UT/SA was not significantly different from the normal group(P>0.05),while the muscle activity ratio UT/SA of the PNF non-intervention control group was significantly higher than the normal group(P<0.05);after 6 weeks of PNF intervention,the control group's the muscle activity ratio UT/MT was significantly higher than the muscle activity ratio before the experiment(P<0.05);the muscle activity ratio UT/LT in the PNF intervention experimental group after the intervention was significantly lower than before the intervention(P<0.05),while the PNF non-intervention control the muscle activity ratio UT/LT of the normal group and the normal group did not change significantly before and after the experiment(P>0.05);the muscle activity ratio UT/SA of the PNF intervention experimental group after 6weeks of intervention was significantly lower than before the intervention(P<0.05),But the PNF non-intervention control group had significantly higher muscle activity ratio UT/SA after the experiment than before the experiment(P<0.05),while the normal group had no significant changes in the muscle activity ratio UT/SA before and after the experiment(P>0.05).(8)Comparison of scapular girdle muscle activity ratio in D2 extension mode: After 6weeks of PNF intervention,the muscle activity ratio UT/LT between the three groups did not change significantly(P>0.05);among them,the PNF non-intervention control group muscle activity ratio UT/SA was significantly higher than the normal group(P<0.05);after 6 weeks of intervention,the muscle activity ratios of UT/MT,UT/LT and UT/SA in the PNF intervention experimental group were significantly lower than before the intervention(P<0.05).The muscle activity ratio UT/MT of the PNF non-intervention control group was significantly higher than before the experiment(P<0.05).Conclusion: The 6-week shoulder PNF training with elastic band combined with manipulation can significantly reduce the activation of UT in college students with Kibler type I scapular dyskinesia,increase the activation of target muscles MT,LT and SA,and reduce UT/MT,UT/ LT and UT/SA target muscle activity ratio;thereby improving the symptoms of scapular dyskinesia,reducing pain,strengthening shoulder muscle coordination,correcting the poor posture of the upper trunk,and improving the movement of the shoulder joint to a certain extent Function,has a certain meaning to further reduce the damage of the shoulder joint. |
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